ASTROSAT CZTI

Data Quality Report

Orbit 33838

Creation date: 2024-06-27T20:53:12.670385
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_106T03_9000004826_33838cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33838cztM0_level2_quad_clean.evt
Size (bytes)527,068,80075,695,040
Size502.7 MB 72.2 MB
Events in quadrant A3,701,910482,321
Events in quadrant B3,043,696487,865
Events in quadrant C3,183,225483,475
Events in quadrant D5,655,169447,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154303
B0125282
C0128942
D0206592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559470.125134%
B5594761.358598%
C5594430.768681%
D559460810.868788%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7207 5595 0 0 0.00% 0.00%
B 7207 5595 49 49 0.68% 0.88%
C 7207 5595 32 32 0.44% 0.57%
D 7207 5595 550 550 7.63% 9.83%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 169 1142256 8690.12 657 645 131.4
A 13 6 12217 88.09 657 645 131.4
A 10 83 10741 76.85 657 645 131.4
B 5 172 293646 2365.66 648 632 123.9
B 4 251 88154 706.61 648 632 123.9
B 4 81 29352 231.87 648 632 123.9
C 15 214 245366 1666.66 634 638 146.8
C 3 233 129039 874.44 634 638 146.8
C 14 254 109276 739.85 634 638 146.8
D 12 235 1256274 8289.57 618 601 151.5
D 8 195 720775 4754.37 618 601 151.5
D 2 250 583207 3846.19 618 601 151.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter